Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
21002excellentexcellent11excellent
20002excellentexcellent11excellent
19002excellentexcellent11excellent
18001excellentexcellent11excellent
17002excellentexcellent11excellent
16004excellentexcellent11excellent
15002excellentexcellent11excellent
14002excellentexcellent11excellent
13002excellentexcellent11excellent
12005excellentexcellent11excellent
11004excellentexcellent11excellent
10006excellentexcellent11excellent
090012excellentexcellent21excellent
080021goodexcellent41excellent
070038lightly pollutedexcellent51excellent
060031goodexcellent41excellent
050029goodexcellent41excellent
040027goodexcellent31excellent
030020goodexcellent31excellent
020020goodexcellent31excellent
010019goodexcellent31excellent
000021goodexcellent31excellent
230018goodexcellent31excellent
220012excellentexcellent31excellent